. >>> correspondent lem tucker from nbc news. the day after woodstock. brings us to our final story tonight. if you drive from this city north, along a series of rural roads, through farm country, in upstate new york, you would drive right by it if you tint see the marker. and you would likely never realize you were driving past the site of a gathering that changed a generation of americans. woodstock started 40 years ago this weekend. those who were there have their own memories or not. those who weren't there have seen the images. one in particular telling the story of the time in the upwards of 500,000 people who came together. >> liftoff. >>> there was a lot going on in the summer of '69. three days in the country in upstate new york seemed like a good idea to a lot of people. ♪ ♪ ♪ some where in the crowd was photographer burke uzell and early that sunday morning as jefferson airplane took the stage. >> come on! >> he took a picture. >> a very gentle scene. you can see people still asleep, people just beginning to come to. they just stood up a